GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2001 🢒 Intrigue 🢒 Engine 🢒 Engine Cooling 🢒 Engine Coolant Thermostat Replacement

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

    Object Number: 289166 Size: SH
  1. Partially drain the engine coolant from the cooling system. Refer to Cooling System Draining and Filling .
  2. Use the J 38185 in order to remove the radiator hose clamp to the water inlet housing.
  3. Remove the radiator hose from the water inlet housing.

    4. Object Number: 289181 Size: SH
  4. Remove the heater hose clamp from the water inlet housing using the J 38185 .
  5. Remove the heater hose from the water inlet housing.

    6. Object Number: 289178 Size: SH
  6. Remove the surge tank inlet hose clamp from the water inlet housing using the J 38185 .
  7. Remove the surge tank inlet hose from the water inlet housing.

    8. Object Number: 263961 Size: SH
  8. Remove the water inlet housing bolts.
  9. Remove the water inlet housing.
  10. Inspect and clean the mating surfaces.
  11. Replace inlet housing (2) and thermostat as an assembly.

Installation Procedure

    Object Number: 263961 Size: SH
  1. Install the water inlet housing (2) and thermostat assembly.

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the water housing bolts with RTV Sealer GM P/N 1052366 or equivalent.

    3. Tighten
    Tighten the water inlet housing bolts to 9 N·m (80 lb in).


    Object Number: 289178 Size: SH
  3. Install the surge tank inlet hose to the water inlet housing.
  4. Use theJ 38185 in order to install the surge tank hose clamp to the water inlet housing.

    5. Object Number: 289181 Size: SH
  5. Install the heater hose to the water inlet housing.

    6. Object Number: 289166 Size: SH
  6. Use theJ 38185 in order to install the heater hose clamp to the water inlet housing.
  7. Install the radiator hose to the water inlet housing.
  8. Use theJ 38185 in order to install the radiator hose clamp to the water inlet housing.
  9. Fill the cooling system with engine coolant. Refer to Cooling System Draining and Filling .
  10. Inspect for leaks.